June 14, 2010 05:00 PM

Michelly Rall/WireImage

Looking radiant in a brightly patterned dress, an expectant Kelly Preston debuted her bump as she joined husband John Travolta on a visit to the Nelson Mandela Children’s Fund on Saturday in Johannesburg, South Africa.

The couple donated $10,000 to the organization during their trip.

Preston, 47, is pregnant and expecting a sibling for 10-year-old daughter Ella Bleu later this year.

The family suffered the loss of their 16-year-old son Jett to a seizure in Jan. 2009.

RELATED: John Travolta and Kelly Preston Are Expecting!

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